EventDispatcher:addEventListener

Available since: Gideros 2011.6

Description

Registers a listener function and an optional data value so that the listener function is called when an event
of a particular type occurs.

 EventDispatcher:addEventListener(type,listener,data)

'type: (string) The type of event. '
'listener: (function) The listener function that processes the event. '
data: (any) An optional data parameter that is passed as a first argument to the listener function. optional